Auto-Start-Stop System

2021 Ford Edge SE, 4WDSECTION Auto-Start-Stop System
WARNING: This page is about a different car, the 2020 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.

The Auto-start-stop system helps reduce fuel consumption by automatically shutting off the vehicle's engine while the vehicle is at a complete stop and restarting the engine when the brake pedal is released. The system can be disabled through the auto-start-stop control switch on the instrument panel centerstack. The Auto-start-stop system is automatically enabled whenever the ignition is turned on.

The engine automatically restarts  when:

  • the brake pedal is released.
  • the Auto-start-stop system is disabled through the auto-start-stop control switch on the instrument panel centerstack.
  • the battery has a low state of charge.
  • it is necessary to maintain interior comfort.
  • the blower fan speed is increased or the climate control temperature is changed.
  • an electrical accessory is turned on or plugged in.
  • there is low brake vacuum.

The Auto-start-stop system may not  turn the engine off under these conditions:

  • the HVAC system is in A/C, heat or defrost modes.
  • the defroster is on.
  • the battery has a low state of charge.
  • the battery temperature is below 5°C (41°F) or above 60°C (140°F).
  • the engine temperature is below 46°C (115°F).
  • the engine temperature is below 60°C (140°F) and the HVAC system is in heat mode.
  • the gear selector is not  in Drive or Sport Mode.
  • the steering wheel is turned rapidly or is at a sharp angle.
  • vehicle speed of greater than 4 km/h (2.5 mph) for more than 2 seconds has not occurred.
  • the vehicle is on a steep road grade.
  • elevation is approximately above 3, 048 meters (10, 000 feet).

Refer to the Owner's Literature for additional information.

RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.